现有的Ruby覆盖工具无法处理（定位或统计）eval中执行的代码。 这是因为Ruby内置的coverage模块没有公开必要的钩子来捕获它。 Covered使用Ruby 2.6，RubyVM :: AST.parse（源代码）存在，它为我们提供了一个精细的工具来计算初始源代码覆盖率（即哪些行是可执行的），从而可以计算“模板”的覆盖范围。
Covered uses modern Ruby features to generate comprehensive coverage, including support for templates which are compiled into Ruby. This only works with Ruby 2.6 and it’s experimental support for RubyVM::AST
Existing Ruby coverage tools are unable to handle
evaled code. This is because the
coverage module built into Ruby doesn’t expose the necessary hooks to capture it. With Ruby 2.6,
RubyVM::AST.parse(source) came in to existance, which gives us a fine grained tool for computing initial source coverage (i.e. what lines are executable), and thus making it possible to compute coverage for “templates”.
It’s still tricky to do it correctly, but it is feasible now to compute coverage of web application “views” by using this technique. This gem is an exploration to see what is possible.
Add this line to your application’s Gemfile:
And then execute:
Or install it yourself as:
$ gem install covered
rspec, simply include the following from your
- Fork it
- Create your feature branch (
git checkout -b my-new-feature)
- Commit your changes (
git commit -am 'Add some feature')
- Push to the branch (
git push origin my-new-feature)
- Create new Pull Request
Released under the MIT license.
Copyright, 2018, by Samuel G. D. Williams.
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
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